超音波探傷試験における新しいき裂深さ測定法の開発 : 第1報,き裂周辺における超音波の伝搬挙動の観測

概要

論文の詳細を見る
Depth sizing of stress corrosion crack (SCO by ultrasonic testing has been required in the inservice inspection of primary loop recirculation pipes in boiled water reactor type power stations. Crack tip diffraction techniques are used for the depth sizing, and inspectors are required their experiences and skills to identify weak crack tip diffraction echoes which are critical for accurate depth sizing. Better understanding of complicated wave propagation behavior around a crack may offer an idea to detect the weak crack tip diffraction echo effectively. In this paper, ultrasonic visualization equipment is constructed to observe how ultrasounds travel in solids, and behavior is discussed as longitudinal and shear waves strike slits or SCCs.
一般社団法人日本機械学会の論文
2007-04-25